Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 421 + 1 = ______
- 21 + 34 = _____
- 337 + 222 = _____
- 2570 + 417 = _____
(a)
421 + 1 = 422
(b)
21 + 34 = 55
(c)
337 + 222 = 559
(d)
2570 + 417 = 2987
Answer(s): 422, 55, 559, 2987